Who or what are "them" of "behind them" in the 2nd paragraph?

7 Mar 2017

Native language
Japanese
Closed question
Question about English (US)
Who or what are "them" of "behind them" in the 2nd paragraph?
Traffic signals depicting pedestrians in dresses have been unveiled in Australia as part of a gender equality campaign.

The trial programme in Melbourne is designed to "reduce unconscious bias", said to the lobby group behind them.

But the 10 signals in the city centre have drawn a mixed response, with critics saying they are unnecessary.

Native language
English (US)

Native language
English (US)

Native language
Japanese

Native language
Japanese

Native language
English (US)

Native language
Japanese

Native language
English (US)
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